Top 20 2002 Chevrolet TrailBlazer - Page 4 Questions & Answers

I think you either have a defective bulb socket or you still have a ground problem, that is the only thing that can cause this, the ground issue may be caused by the turn signal switch as well.

Check your bushing on the shift linkage. These tend to break, very common. Dorman offers a repair bushing.

You started at the wrong end. The speed sensor controls the function of those solenoids you just replaced. Did you change the transmission Fluid and filter, it was due at 80,000 miles. Perform an OBDII scan of the stored fault history. let the OBDII scan be your guide to repairs, to avoid buying parts you don't need. Loss of speed sensor signal will result in no torque converter lock up or overdrive as well as no down shift back to 1st.

Ivan, Trailblazer only came with the 6 or 8 cylinders. You probably have the I6 engine. I have found that removing the battery AND battery tray makes this job really easy. Must remove alternator and alternator bracket. Pretty forward from there, make sure you replace your temperature sensor also while you're in there, it's right above the thermostat.

it sounds to me like the security system is failing i had it happen to one of my GM vehicles.. i took it in and they wanted a ton of money to fix it so i did lots of research. I found a part you can install yourself and it will bypass the system and allow the car to start every time, i put mine in 5 years ago and i havent had a problem since. check out the site i checked and the list your car in on it year make and model for the problem.. They have great customer service and if for some reason it doesnt work they will refund you 100% Hope this gives ya some help http://vatspasslockpasskeysecurityhelp.com/ Do It Yourself GM Security bypass

If this is for the illumination bulbs in the cluster, that would be the park light fuse in the fuse panel. This should be in a panel under the driver's side dash. At least, that is the set-up for earlier model GM vehicles.

you just need to pry it off but it will come off

reduced engine power has to do with the electronic throttle control or drive by wire . All electronic wires under the dash on the gas pedal , electric motor on the throttle body . DTC'S - diagnostic trouble codes stored in the computer . Take it to the dealer .

There are something's involved that you are not aware of , or familiar with . Electronic control modules . Rear Wiper/Washer System Controls • Body control module (BCM) • Liftgate control module (LGM) • Rear wiper/washer switch Do you know what a serial data network is ? Rear Wiper/Washer System Operation The rear window wiper/washer switch is an input to the BCM. The requested rear wiper mode is sent to the liftgate control module (LGM) by the BCM as a message on the serial data circuit, and the rear window wiper motor is controlled by the LGM. The switch power circuit to the rear wiper/washer switch is a 12-volt reference supplied by the BCM during ignition on, accessory or RAP power modes. The rear wiper/washer switch is a series of resistors and the switch position is determined by the voltage of the rear wiper/washer switch signal circuit to the BCM. The rear wiper/washer switch has continuity at all times and the BCM expects a rear wiper/washer switch signal voltage in all switch positions including OFF. The rear wiper motor is supplied battery positive voltage and ground. The LGM controls rear wiper motor operation through the rear wiper motor control circuit. The rear wiper motor control circuit is supplied a battery positive reference voltage by the rear wiper motor module and is pulse width modulated to ground by the LGM. The duty cycle of the pulse width modulation determines the rear wiper motor operating mode. The liftglass and liftgate ajar switches are inputs to the LGM and must be in an inactive state in order for rear wiper washer system operation to be enabled. When an ajar switch is active the LGM suspends wiper motor operation directly and sends the ajar switch status messages over the serial data circuit enabling the BCM to suspend washer pump operation. The rear window washer pump is controlled by the BCM through the rear washer relay. Battery positive voltage is supplied to the coil and switch sides of the rear washer relay. When the rear window wash request is active the BCM energizes the relay by grounding the relay coil through the rear washer relay control circuit. When the relay is energized battery positive voltage to the relay switch is supplied to the washer pump control circuit. Your best bet , take it to a qualified repair shop and have it checked for DTC'S - diagnostic trouble codes . DTC B1017 or B3970 The rear wiper motor is supplied battery positive voltage and ground. The liftgate control module controls rear wiper motor operation through the rear wiper motor control circuit. The rear wiper motor control circuit is supplied a battery positive reference voltage by the rear wiper motor module and is pulse width modulated to ground by the liftgate control module. The duty cycle of the pulse width modulation determines the rear wiper motor operating mode. DTC B3799 2 Turn the ignition ON. Operate the rear wiper switch through all the switch positions. Does the rear window wiper operate normally? -- YES - Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems NO - Go to Step 3 3 Install a scan tool. Display the liftgate control module data list. Observe the following parameters while operating the respective switches. Refer to Scan Tool Data List for typical values. • Liftgate Ajar Switch • Liftglass Ajar Switch Did the scan tool indicate the correct switch positions? -- Go to Step 4 Go to Courtesy Lamps Inoperative in Lighting Systems 4 Observe the requested rear wiper parameter in LGM data list. Operate the rear wiper switch through all the switch positions. Does the scan tool indicate the correct requested rear wiper parameter in relation to the switch position? -- Go to Step 5 Go to Step 6

Check gages means that one of the gages is reading an abnormal reading, like hot engine oil pressure issues, charging system voltage, pay attention next time it happens to the readings on the gages for something out of the normal

Timing chain worn , probably . Have it checked before you wreck the engine . Chevy Malibu Exhaust camshaft solenoid P0014

I haven't looked up the heater hose on your vehicle. Usually I take a utility knife and split the hose, then peel it off the fitting. Jerking the hose around on the heater core end is not a good idea. Usually the hose will form around that fitting, use a utility knife, on the hose ends. You can take heater hose to auto store, show them what size and how long. You could have heater hose fittings that I'm not familiar with, I'd have to look at it, in that case.

I don't know what testing you have done? A lot of things can cause a misfire, fuel--spark--compression. My info shows coil on plug ignition, did you visually check for spark at the number 6 plug? Did you check fuel injector pulse?

Did you use the original key and lock cylinder? They are coded for the security system.

Do you have any codes in the ECM ? Have you checked the neutral safety switch ?

sometimes if the battery is weak enough that could cause a drain and suddenly the memory fails and then it resets to 12 oclock.Also the stereo system uses two 12 volt positive feeds one is a constant that many times is fused by the same fuse that feeds the lighter socket but also many times only one of the fuses on the fuse chart will mention the stereo when in fact another fuse is feeding a different circuit in the stereo. You could have weak charging/starting system connections connections due to rotted/corroded battery/alternator/starter/engine block ground posts/connections or the cables could even be rotted internally that connect up to those connections.Again weak or poor grounds or loose connections cause a drain on the whole system that could over draw some circuits causing them to temporally loose their proper operating voltage/power.

Do the brake lights work? If not then you have no power to the release solenoid that locks the shifter in park, check them.

start at the longest line and finish at the shortest bleed as if there is no abs unit in the car

It's probably a loose ground wire some place, inspect all the wires and shake them to see if u can find where it is

Program mode , What gets in program mode ? PCM / BCM . I/C Any DTC'S - diagnostic trouble codes ? You'll need to do a little better job explaining if you would like help .